Re: [PATCHv3 1/5] efi/runtime-wrappers: detect FW irq flag corruption

From: Matt Fleming
Date: Mon Apr 25 2016 - 11:59:29 EST


On Mon, 25 Apr, at 03:27:35PM, Mark Rutland wrote:
>
> I have no strong preference so long as the code is correct.
>
> Another option is to get rid of the bool entirely:
>
> flags ^= cur_flags;
> if (!WARN_ON(flags & ARCH_EFI_IRQ_FLAGS_MASK))
> return;

OK, let's do the following because we need flags to be preserved for
printing,

---

unsigned long cur_flags, mismatch;

local_save_flags(cur_flags);

mismatch = flags ^ cur_flags;
if (!WARN_ON_ONCE(mismatch & ARCH_EFI_IRQ_FLAGS_MASK))
return;